Photographic film with base of neutral tint



Sept. 2, 1924. ummm J. H. HASTE ET L PHOTOGRAPHIC FILM WITH BASE OF NEUTRAL TINT Filed Oct. 14 .1922

INVENTo Rs. lfavzeslZZ-[ase f'zwm. Z Ward,

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i ATTORNEY port Q, the ished X-rey shadowgroph or image in layer l een he viewed, to better effeet because the light transmitted through' the layers t and 2 tothe ima e end thence to the eye or the observer will e diused in the layer t Ianali the combined color or tint will be neutral' or eectively white. The dye in this instance, as inthe other forms of the invention, is one that is not washed ont or impaired lby the ordinary photo-` gohic developing .and fixing baths.

aving thus described our inventions whet we claim es new `and desire to secure by Letters Patent is:

l. 'As an erticle of manufacture e photoaphie film comprising e photogrephcall'y sensitive layer, a light-transmitting support therefor having a color which would be displeasing when viewing an image formed from said sensitive layer, and e layer oon- -thinning sutcient complementary color toI wenn@ subetantielly neutralize .seid rst named color.

2. As an article of manufacture a photographic lm comprising a photographically sensitive layer, o, light-transmitting exible cellulosic-sup ort. therefor having a yellowish color an a layer containing suflicient bluish color to substantially neutralize said yellowish color. d

3. As en article of manufacture a photon hic lm comprising a gelatino-silverelid layer sensitwe to X-rays, a lighttransmitting nitrocellulose support therefor having a weak yellowish color, and a layer between said rst named layer and said s port having sulicient bluish color to su 'stantielly neutralize said yellowish color.

Sled at Rochester, New York, this 11th day of @ctober, 1922.

J H. HASTE.

' n J. wenn. 

